In June, an IBM computing executive claimed quantum computers were entering the “utility” phase, in which high-tech experimental devices become useful. In September, Australia’s Chief Scientist Cathy Foley went so far as to declare “the dawn of the quantum era.” This week, Australian physicist Michelle Simmons won the nation’s top science award for her work ...
Quantum computers are becoming ever more complex and powerful. Researchers at the University of Innsbruck, in collaboration with the Johannes Kepler University Linz and the University of Technology Sydney, are now presenting a method to characterize even large quantum computers using only a single measurement setting. The gold standard for the characterization of quantum computers ...
Two milliseconds — or two-thousandths of a second — is an extraordinarily long time in quantum computing. On these timescales, the blink of an eye — at one 10th of a second — is like an eternity. Now a team of researchers at UNSW Sydney has broken new ground in proving that ‘spin qubits’ — ...
Quantum computers harness some of the almost-mystical phenomena of quantum mechanics to deliver huge leaps forward in processing power. Quantum machines promise to outstrip even the most capable of today’s — and tomorrow’s — supercomputers. Quantum computers, as their name implies, operate on the bizarre principles of quantum mechanics to manipulate information and are poised ...
A team of physicists from the Harvard-MIT Center for Ultracold Atoms, along with other universities, have taken a big step by developing a special type of quantum computer known as a programmable quantum simulator capable of operating with 256 quantum bits, or “qubits.” The system marks a major step toward building large-scale quantum machines that ...
A new study indicates that qubits composed of holes may be the solution to the operational speed/coherence trade-off, potentially scaling up qubits to a mini-quantum computer. Quantum computers are predicted to be much more powerful and functional than today’s “classical” computers. One way to make a quantum bit is to use the “spin” of an ...
Electrons in a solid occupy distinct energy bands separated by gaps. Energy band gaps are an electronic “no man’s land,” an energy range where no electrons are allowed. Now, scientists studying a superconductor compound containing iron, tellurium, and selenium have found that an energy band gap opens at a point where two allowed energy bands ...
A study by NUST MISIS, the Russian Quantum Center, and the Karlsruhe Institute of Technology, published in npj Quantum Information, may pave the way for quantum computing. A Russian-German research team has created a quantum sensor that grants access to measurement and manipulation of individual two-level defects in qubits. In quantum computing, the information is encoded in qubits. Qubits (or quantum bits), the quantum mechanical analog of a classical ...
Physicists at LMU, together with colleagues at Saarland University, have successfully demonstrated the transport of an entangled state between an atom and a photon via an optic fiber over a distance of up to 20 km — thus setting a new record. This is a step toward a quantum network. Entanglement describes a very particular ...
Quantum computing has the potential to revolutionize technology, medicine, and science by providing faster and more efficient processors, sensors, and communication devices. But transferring information and correcting errors within a quantum computer remains a challenge to making an effective quantum computer. In a paper published in the journal Nature, researchers from Purdue University and the University of Rochester, ...
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